USRE11532E - smith - Google Patents

Description

17 Sheets-Sl1eet 1.

0. 1?. SMITH. MACHINE FOR AUTOMATIOALLY MAKING WIRE CHAIN.

Reissued Apr. 14, 1896.

lnveni' r' QFSmif/z RS cm, wasnma'rau, u. c,

' 17 Sheets- Sheet 2. 0. F. SMITH. MAGHINBFOR AUTOMATICALLY MAKING WIRE CHAIN.

Reissued Apr. 14, 189 6.

17 Sheets-Sheet 3. G. F. SMITH. MACHINE (FOR AUT rm: NORRIS rlrnu ca, wanunann. a;

17 Sheets-Sheet 4.

0. RsM-ITH. MACHINE FOR AUTOMATIUALLY MAKING WIRE CHAIN.

ReissuedApr. 14, 1896.

8mm 4 w m MN SUN m 1 c F Y Q R. Q wk R Q Wm, M 1 m M 1:45 mmms nsrsns cm, wnsnmarou, m:

17 Sheets-Sheet 5.

O. P. SMITH. MACHINE FOR AUTOMATICALLY MAKING WIRE CHAIN. No. 11,532.

Reissued Apr. 14, 1896.

Invenlor; C-F Smith 50., wnsumcralv. p. c.

17 Sheets-Shed; e.

A 0. F. SMITH. .MAGHINE FOR AUTOMATICALLY MAKING WIRE GHAIN. No. 11,532.

Reissued Apr; 14, 1896.

witnesses PH-I NORRII'PETERS cm, wasnmcrou, m c,

17 Sheets-Sheet 7.

. 0,1. SMITH. MACHINE FOR AUTOMATIOALLYMAKING WIRE CHAIN.

No. 11,532. Reissued Apr. 14, 1896.

- wifiesses: v Inuenibr; QESmtth V 17 SheetsSheet 8.

0. F. SMITH.

MACHINE FOR AUTOMATICALLY MAKING WIRE CHAIN.

No. 11,532. Reissued Apr. v14, 1896 I 11)" asses: a! lmreh'lbr,

THE mums pn'ins 1:0 wAimum-cu, n. c.

' 17 SheetsSheet 9. SMITH. MACHINE FOR AUTOMATICALLY MAKING WIRE CHAIN. No. 11,532.

Reissued Apr. 14, 1896.

THE NORRIS PETERS 00., wAsulnnToN, 0.1:.

17 Sheets-Sheet 10.

- 0. P. SMITH. MACHINE FOR AUTOMATICALLY MAKING WIRE CHAIN. No. 11,532.

Reissued Apr. 14, "1896.

o 7 mm N 17 sheet -sheet 11.

C. FJSMITH. VMAGHINE FOR AUTOMATICALLY MAKING WIRE CHAIN. No. 11,532.

Reissued Apr. 14, 1896.

Ina/e71 7; 57115111 3 B I I l l 1 I l z I a l i l wiiiwsses:

summon. o. c.

17 SheetsS1 1eet 12.

ReissuedApr. 14, 1896.

0. SMITH. MACHINE FOR AUTOMATICALLY MAKING WIRE CHAIN. No. 11,532.

17Sheets-Sheet 13.

I, v G. SMITH. MACHINE FOR AUTOM ALLY MAKING WIRE CHAIN.

No. 11,532. Reissued-Apr. 14, 1896.

I 3% Q1 a w E a i R M J aw; 1) m 3 N 11' n." f P V///l & r: N Q

17 Shee ts8heet 14.

0. F. SMITH. MACHINE FOR AUTOMATICALLY MAKING WIRE 01mm.

No. 11,532. Reissued Apr. 14, 1896.

4 .6 a 7 w R R S W E P i y Q J mm m n o g g W m3 wa'ihessesz 17 Sheets-Sheet 15.

' 0. F. SMITH. MACHINE FOR AUTOMATICALLY MAKING WIRE CHAIN. No. 11

,532. v v Reissued A r. 14,1896;

II cm, muluucrau, n. r.

1'7 Sheets- -Sh-eet 1a.

0.1. SMITH. MACHINE FOR AUTOMATICALLY MAKING WIRE CHAIN. No. 11,532.

Reissued Apr. 14,- 1896.

17 8heets-Sheet 17.

O. P. SMITH. MACHINE FOR AUTOMATICALLY MAKING WIRE CHAIN. No. 11,532. I Reissued Apr. 14, 1896.

, .VJUN'AITED .STATES onAR-LEs' '11. 'snrrin, or BRIDGEPQRT, oo'muo'riciirr, Assrevolt 'i o P'AfrENT j OFFICE SMITH 8h EGG MANUFACTURING COMPANY. OF SAME, PLACE.

" fMA oHm E- FOR AUTOMAT N- MAKING W 'N-Q I SPECIFICATION forming'part of BeissuedLetters Patent No. 11,532, dated April 14:, 1896. .1M No. 9B1. ama ml. 19, 1895. Application amuse sh mm t, 189d. Serial to. 575,655.

To all whom it may concern:

Be it known that I, CHARLES F. SMITH, a ci.-ti-' zenof the United States, residing at Bridgeport, in the county of Fairfield and State 'of Connecticut, have invented certain new and useful Improvements in Machines for Automatically Making \Vire Chain 5 and I do hereby declare the following to be'a full, clear, and

exaetdescription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

- My invention has reference to machines to form a loop-and-an' eye, the extreme ends facture-ofsuchchain composed of links bent of thewire being passed within the loop and thenbent outwardly around the side wires ,to substantially encircle'the same.

The main difiiculty in machines constructed for the purpose of working wire lies in the fact that as a rule too much is required of parts at a single operation, it being true that a single part is usually called upon to perform at least a double function at a single operation. This is a very serious mistake, not-only because too muchwork is thereby thrown upon a single element of the machine, but for the further reason that the parts thus overworked frequently fail to respond to their requirements, and the machine is therefore constantly undergoing repairs.

It is the object of my present invention to completely form the links of the chain by a series of separate bending operations,;each one of which latter is performed by separate bending instrumentalities, whereby greater perfection is attained in the manufactured article, a larger output insured, and a great amount of expense saved.

There are seven bending operations per-- formed by.n1y machine in the manufacture of this chain, and in order that a better understanding of my invention may he arrived at I have herein shown and described in detail and in succession these several operations.

. In order that those skilled in the art to which my invention appertains may more fully understand the nature and construction of the same and may obtain abetter knowledge of the operation 011" my machine in the performance of, the. several bending operations above referred to, I will proceed to a detailed description thereof, reference being had to the accompanying drawings, which form a part of this specification, and in which i I Figure 1 is a plan of amachine constructed in accordance with my improvement;,Fig. 2, a front elevation Fig. 3, a section at the line a (t of Fig. 1; Fig. 4, asection at the line b b of Fig. 1; Fig.- 5, a section atthe line 0. c of Fig. 1, looking in the direction of the arrows d;-Fig. 6, a section at the line 0 c of Fig. 1, looking in the direction of the arrowse; Fig. 7, a section at the line ffof Fig. 1; Fig. 8, a section at the line 9 g-'of Fig. 1.

ingthe position of the parts'after the first bending operation of the link has been performed. Fig. 10 is a plan viewsimilar to scale, but .showingthe positions which the parts assume, respectively, after the third, fourth, and fifth bending operations. Figs.

-15 and 16 are detail broken plans, on an en-' larged scale, similar to Fig. 1, but showing the positionof the parts afterthe sixth and seventh bending operations, respectively. Figs. 17, 18, 19, 20, 21, 2 2, and 23 are detail perspective elevations illustrating the formation of the link gradually by the several bending operations above referred to.

Similar numbers andletters of reference dcnote like parts in the several figures of the drawings.

My improved machine comprises horizontal shafts journaled upon a stationary bed, andthe several bending operations, in the formation of the link, are all performed in their proper order from cams which are carried by these shafts. These various cams are cut in Fig. 9 is a sectional elevation si1ni-'- lar to Fig. 3, on an enlarged scale, but-showmachine.

such manner that the intermediate instrumentalities which perform the several bending operations operate successively and at predetermined times to perform their functions. After a link has been completely formed by the various'bending operations thewire for a succeeding link is fed through the eyes of this previously bent and formed link and then cut oif preparatory .to being bent into the propershape.

In describing my improved machine I will take up in order the several bending operations and will thereby follow the link through the machine in its manufacture, thus giving a clearer idea of my improvement than would .be obtained if I explained the machine as a whole before identifying the manufacture in detail of the links. I have therefore separated the parts into groups of bending and forming instrumentalities, and in my description will especially refer to these groups in their order as to functions performed in the 1 is the bed of 'the machine, having supported thereon in suitable journals the shafts 2 3, which latter are provided with interm eshing bevel-gears 4 5, respectively. The shaft 2 I will term the main shaft, the power being applied to the shaft 3 around the pulley 6.

Prior to the description of any of the bending instrumentalities I will describe the special construction of power-presses which are used by me as auxiliaries in all of the bending operations, and in this connection I would seventh bending operations.

refer especially to Figs. 1, 2, 3, 4,- 6, 9, and 11. Mounted upon the bed is an upright 7, having guideways 8, Within which a gate 9 is capable of sliding freely, and secured beneath this bed by bolts or otherwise is a'hanger 10, provided with guides 10, within which a gate 11 is capable of a free sliding movement. These two guideways 8 10 are in the same vertical plane, and the gates can be carried 30':

ward or away from each other for the purpose of cooperating in the manner presently to be explained. The upper gate9 carries bending-tools 12 13, which assist toperfo'rm the first bending-operation, the tool 13 being formed with a cutting edge a at its side, which cooperates with a stationary block 14, through whichthe wire is fed to cut 01f the wire into predetermined lengths. Carried also by this upper gate are the bending-tools 15, which perform the fourth bending operation, and anvils 16, which support-the wire during the fifth bending operation. The lower gate carries studs 17, around which the ends of the wire are bent, these studs acting as supports for the wire during the entire formation of the link, with the exception of the sixth and Also carried by the lower gate is the mandrel 18, around which the wire blanks are bent into U shape and then finally formed.

J ournaled within the upright 7 is a short rock-shaft 19, having tightly'secured on its inner end a disk 20, which latter is provided with a crank-stud 21, which extends loosely through a block 22, capable of a free sliding movement within a slot 23 in the gate 9. It

will be readily understood that when this shaft 19 is rocked back and forth the gate 9 will be elevated and lowered, the slot 23 providing for the sliding of the block 22 during the swinging movements of the stud 21.

J ournaled within the hanger 10 is. a rockshaft 24, having secured at its inner end a disk 25, provided with a crank-stud 26, which projects loosely within a block 27, the latter being capable of a free sliding movement within a slot 28 in -the lower gate 11, these arrangements and connections between the rockshafts 19. 24 and gates 9 11 being substantially the same, the object in both instances being vmerely to reciprocate the gates in a vertical plane during the rocking movements of the shafts. In the instance of the upper gate the slot is defi ected'in order to allow for a greater throw of this gate. The movement of the lower gate being considerably less, the slot is simply horizontally disposed. These shafts 19 24 are rocked by substantially similar means, which latter I will now deseribe.

29' is a crank secured on the rear end of the shaft 19,.and 30 is a lever pivoted at its lower end at 31 to the frame of the machine, its upper end being connected to said crank by means .of a link 32, so that it will be readily understood that any rocking movements of the lever 30 will be communicated to the crank 29,

B is a cam mounted on the shaft 2 and'having in its side a peculiarly-shaped groove 33, within which extends a roller 34, journaled on the lever 30. -It is not deemed necessary to enter into any detail description as to the layout and general outline of this groove in the cam B, since it is considered suflicient merely to state that said groove is such that as the cam revolves an intermittent and variable movement will be imparted to the lever 30 for the purpose of causing the upper gate to opcrate in the proper timefor the performance of its functions.

Secured on the rear-end of the shaft 24 is a crank 35,-and pivoted to this crank is a lever 36, whose free end is forked and extends with a roller 37, which extends within a suitably shaped and outlined groove 38 in the cam C, mounted on the shaft 2, so that it will be readily understood that as this cam revolves a reciprocatory rocking movement will be imparted to the crank 35 for the purpose of elevating and lowering the gate 11.

,For reasons similar to those above stated with respect to the cam B it is not deemed necessary to describe in detail the general outline of the groove 38 in the cam O, and the same is true of the operative contours of all the cams hereinafter to be mentioned, it'being considered sufficient for the purposes of this description to assume that the cams are properly cut to effect the various operations required inthe proper times.

around the shaft 2, said lever being provided 1 scription.

39 is a head-block capable of. sliding in horivided with vertical guideways within which a bar is capable of sliding freely. J ournaled within thebaek of this block 39is a rockshaft 1L1, (see Fig. (5,) which is operatively connected at its front end to the bar in precisely the same manner as in the instance of the shafts 19 24 and gates 9 11, and itis therefore not deemed necessary to repeat this de- Secured to the rear end of this i shaft 41 is a crank 42, and it will be readily understood that by the reciprocation of this crank the bar 40is lowered or elevated, as the case may be. The wire 43, as it is fed into the machine to the bendingdeviees, is supported upon the base of this block 39, and it will therefore be clear that when the bar 40 is depressed it will clamp the wire firmly against the base of the block.

I 4:3? is a lever pivoted at All to the frame of the machine, and to the upper end of this 1ever the crank at is connected by means ofa link This link is pivoted at one end to the crank ii, the other end of the link being pivoted to the leveraii within an elongated slot 40 in the latter for the obvious purpose of allowing said lever to swing from its pivotal point without any binding at the point of its connection with the link 45.

47 isa rock-shaft journalcd in thefranie of,

the machine beneath the bed and having secured thereon the eranl: 48,-and 4:9 is a link whose ends are pivoted to said crank and to the lever a3, whereby any movement from the rock-shaft L7 willbe com municated to said lever, 1

Referring particularly toFig. 8, is a crank secured on the shaft 47-and carryingat its extremity a roll 51, which projects within the groove 52 in the cam A, the revolution of the latter causing said crank to be reciprocated,

so as to rock the shaft 47. When thcfshaft 'et7is rocked in such manner as to throwthe leyer 4L3 inward, the bar 40 will be bound firmly against the wire, and the continued move- ,ment of such lever, after the wire is thus carrying the wire bodily with it.

. wire with it.

. clamped, will cause'the block 39 to be moved movement of the block 39 is, of course, such that when the lever 43 is again operated to cause the bar 40 to grip the wire only enough of the latter will be fed forward .to enable a link to be formed, so that it will. be clear that the operation of this feeding device is interniittent and that a predetermined length of wire is fed at each inward movement of the block 39. 7

I will now describe the means whereby the first bending operation in the manufacture of a wire link by my machine is performed.

By the action of the block 39 the wire is fed between the two gates 9 11, the parts being in the position as shownat Fig. The block nowrecedes and the cams B G operate to cause the upper and lower gates to be moved toward each other, whereby the tools 12 13 will be carried downward toan extent sufficient only to enable the tool 13 to cut oif the blank, at which point said tools come to a state of rest without having effected any bends in the wire,while the upward movement of the lower gate causes the studs 17 to be thrown against the wire blank, thereby forcing the end portions of the latter'up within the tools 12 13, so as to form a half-round,thc extreme ends of the blankbeing thus bent downward, as clearly shown at Fig. 9. The gate 9 is now elevated prior to the next operation of the bending. devices. v Referring particularly to Figs. 1-, 7, 10, and 11, I will now enter into a descriptionof the instrumentalitiesand the operation thereof for the purposeof effecting thesecond bending operation. .lournaled in boxes presently to be described are shafts 53 f t, having tightly mounted thereon intermeshing spur-pinions 55 56, whereby said shafts may revolve simultaneously but in opposite directions. Also secured on the shaft 53 is an elongated pinion -57, which meshes with'a rack-bar 58 capable of sliding freely within suitable boxesofl, secured to the bedl. The rear extremity of this rack-bar is provided witha roll 60, which projects within a groove 61. in the cam D,

movement and consequent carrying of the shafts 53 54 bodily to and fro causing no disarrangement of parts nor in any wayaifecting the communication of the proper movements to these shafts, owingto the fact that the pinion 57 is elongatedand-is therefore always in' engagement with the rack-bar 58. These shafts 53,54. are hollow and have extending therethrough clam p-rods G5 60,- which latter are capable of sliding freely therein and are secured at their rear ends to an an,- gle-bloek 67, which latter is adapted to slide freely on suitable ways in the slide 64:, as will be clearly seen by reference toFigs. land 8. It will thus be. seen that the shafts 53 5a and the clamp-rods (i5 66 are capable of independent sliding movements. Bolted to the block 67 is a lever 68, provided with a roll 69', which

Images